public class Tuple { 
	  public  int x; 
	  public  int y; 

	  public Tuple(int x, int y) { 
	    this.x = x; 
	    this.y = y; 
	  } 
	  public void ChangeData(int x, int y){
		    this.x = x; 
		    this.y = y; 
	  }
	  public int getX(){
		  return x;
	  }
	  public int getY(){
		  return y;
	  }

	@Override
	public String toString() {
		return "x: " + x + "; y: " + y;
	}
}